Dear James,
Those performance specs for the 10b are remarkable (especially
the adjacent figure)! Would the SAE Mk. VI have similar performance
in this regard? Doesn't the SAE make use of Butterworth filters
in the IF as does the Marantz? Maybe the filters are used in
a scaled down fashion placing the Mk. 6 performace around that
of the Marantz 20b?
My offer to anyone of $1000 for a working Marantz 10b still
stands! (and probably will remain standing for a long time!) :-)
Paul Bigelow
--- In SAE_Talk@..., James Bongiorno <sstinc@e...> wrote:
Dear Paul,
Most people, make that virtually no one, understands the design of
the 10B
and this is a fact. Even though the stability of the tuner is quite
remarkable over time, it is very critical in its alignment
proceedures.
There are not 5 people in this country who could properly align
this unit.
If you knew the IF characteristics of the design you would
understand that
closely spaced station interference is practically impossible with
this
tuner. Correctly aligned, the ADJACENT channel selectivity is a
whopping 38
dB's and the alternate channel selectivity is over 100 dB's. AND
this is in
NARROW BAND which is the only mode that the 10B operates under.
This is
truly remarkable considering that the 10B makes better specs and
performance
in its "narrow" band mode than virtually all other tuners in their
wide band
mode.
James Bongiorno
pbigelow@u... wrote:
Hello James,
I have no first hand knowledge of image problems with
the 10b, I have just encountered reports of problems with
the close spaced signals. The 10b's reported on, of course,
may have needed work or alignment. If I had a properly
restored one, I could answer my own question pretty
quickly.
Anybody out there want to sell me a working Marantz 10b
for $1000? :-)
Paul Bigelow
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